3 ms·

It's been a long time since I was last excited what AMD has to offer. Hopefully this puts AMD back on the map, the x86 market needs a second strong contender. I

by vardump 12y ago

It's been a long time since I was last excited what AMD has to offer. Hopefully this puts AMD back on the map, the x86 market needs a second strong contender. I might choose AMD for that reason alone, if they get within 20% ballpark of Intel IPC. Especially Skylake comparable AVX-512 performance would be good. I also hope they'll put some more effort in Catalyst drivers. Had pretty horrible experience under Ubuntu 15.04 recently...

tbirdz 12y ago
Don't get your hopes up about AVX-512. Apparently, full support is not coming until Cannonlake: http://www.kitguru.net/components/cpu/anton-shilov/intel-skylake-processors-for-pcs-will-not-support-avx-512-instructions/ http://www.kitguru.net/components/cpu/anton-shilov/intel-sky...
- vardump 12y ago
  That's only true for Intel Skylake mobile/desktop CPUs. I find desktop and mobile offerings too unreliable for anything serious, due to lack of ECC support. Data corruption on non-ECC systems has bitten me more than once. I've learned my lesson. Skylake Xeons — the only Intel chips I'm interested in anyways — on the other hand will support AVX-512. The software I'm writing already has rudimentary support for AVX-512. The prospect of processing 64 of 16 bit elements per clock cycle per core is pretty exciting. 32x per instruction (512/16) and 2x comes hopefully from dual issue. Besides, we're talking about AMD chips here, aren't we?
  - tadfisher 12y ago
    How did you verify you were bitten my memory corruption?
    - vardump 12y ago
      By analyzing the end result. Apparently single bit corruption is not that uncommon. It's striking what it does to a CBC encrypted stream...
      - raverbashing 12y ago
        It might be (more) common if: your BIOS has a wonky config (memory timings), not enough cooling or not a great PSU I wouldn't do 'hard work' on a machine that doesn't pass a Prime95 and Memtest (or similar programs) run.

by vardump 12y ago

tbirdz 12y ago

Don't get your hopes up about AVX-512. Apparently, full support is not coming until Cannonlake: http://www.kitguru.net/components/cpu/anton-shilov/intel-skylake-processors-for-pcs-will-not-support-avx-512-instructions/ http://www.kitguru.net/components/cpu/anton-shilov/intel-sky...

vardump 12y ago
That's only true for Intel Skylake mobile/desktop CPUs. I find desktop and mobile offerings too unreliable for anything serious, due to lack of ECC support. Data corruption on non-ECC systems has bitten me more than once. I've learned my lesson. Skylake Xeons — the only Intel chips I'm interested in anyways — on the other hand will support AVX-512. The software I'm writing already has rudimentary support for AVX-512. The prospect of processing 64 of 16 bit elements per clock cycle per core is pretty exciting. 32x per instruction (512/16) and 2x comes hopefully from dual issue. Besides, we're talking about AMD chips here, aren't we?
- tadfisher 12y ago
  How did you verify you were bitten my memory corruption?
  - vardump 12y ago
    By analyzing the end result. Apparently single bit corruption is not that uncommon. It's striking what it does to a CBC encrypted stream...
    - raverbashing 12y ago
      It might be (more) common if: your BIOS has a wonky config (memory timings), not enough cooling or not a great PSU I wouldn't do 'hard work' on a machine that doesn't pass a Prime95 and Memtest (or similar programs) run.